Objective To assess the prevalence of AIDS-related sexual behaviors and HIV infection status in young men who have sex with men (YMSM) in China.Methods Literature retrieval was conducted to obtain the related literature indexed by CNKI,Wangfang and PubMed databases from January 2005 to February 2015.Two reviewers independently screened the literature according to the inclusion and exclusion criteria,extracted data and assessed the methodological quality.Meta-analysis was performed by the R software.Results Thirty seven studies involving 32 110 YMSM were included.75.5％ (95％ CI:68.8％-81.2％) YMSM sought sexual partners through Internet and 65.5％ (95％CI:60.0％-70.6％) had more than 2 sexual partners.In the last 6 months,89.1％ (95％ CI:84.2％-92.6％) YMSM had anal intercourse and 42.0％ (95％ CI:37.4％-46.6％) used condom consistently;11.4％ (95％CI:8.4％-15.4％) had vaginal intercourse and 36.9％ (95％CI:32.4％-41.6％) used condom consistently.The pooled prevalence of HIV infection was 5.0％ (95％CI:3.9％-6.5％),sub-group analysis showed that the prevalence of HIV infection in the eastern,central and western China were 4.2％ (95％CI:2.6％-6.6％),1.9％ (95％C1:0.8％-4.6％),6.3％ (95％ CI:4.7％-8.5％),respectively,and there were significant differences among different areas.Conclusion The prevalence of AIDS-related risk sexual behaviors and incidence of HIV infection in YMSM were high in China,it is necessary to conduct AIDS intervention in this population.